Showing 1–8 of 8 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Kouji Ishikawa | Hitachi Construction Machinery Co. | 5 |
| 2 | Tadakatsu Nakajima | Hitachi | 2 |
| 3 | Kouichi Shibata | Hitachi Construction Machinery Co. | 1 |
| 3 | Kazuo Fujishima | Hitachi Construction Machinery Co. | 1 |
| 3 | Shinji Nishikawa | Hitachi Construction Machinery Co. | 1 |
| 3 | Naotaka Tanaka | Hitachi | 1 |
| 3 | Naoki Hagiwara | Hitachi Construction Machinery Co. | 1 |
| 3 | Junguo Xu | Hgst Netherlands, B.V. | 1 |